<?php
/**
 * Smarty plugin
 *
 * @package Smarty
 * @subpackage PluginsModifierCompiler
 */

/**
 * @ignore
 */
require_once( SMARTY_PLUGINS_DIR .'shared.literal_compiler_param.php' );

/**
 * Smarty escape modifier plugin
 *
 * Type:     modifier<br>
 * Name:     escape<br>
 * Purpose:  escape string for output
 *
 * @link http://www.smarty.net/docsv2/en/language.modifier.escape count_characters (Smarty online manual)
 * @author Rodney Rehm
 * @param array $params parameters
 * @return string with compiled code
 */
function smarty_modifiercompiler_escape($params, $compiler)
{
	try {
		$esc_type = smarty_literal_compiler_param($params, 1, 'html');
		$char_set = smarty_literal_compiler_param($params, 2, SMARTY_RESOURCE_CHAR_SET);
		$double_encode = smarty_literal_compiler_param($params, 3, true);

		if (!$char_set) {
			$char_set = SMARTY_RESOURCE_CHAR_SET;
		}

		switch ($esc_type) {
			case 'html':
				return 'htmlspecialchars('
				. $params[0] .', ENT_QUOTES, '
				. var_export($char_set, true) . ', '
				. var_export($double_encode, true) . ')';

			case 'htmlall':
				if (SMARTY_MBSTRING /* ^phpunit */&&empty($_SERVER['SMARTY_PHPUNIT_DISABLE_MBSTRING'])/* phpunit$ */) {
					return 'mb_convert_encoding(htmlspecialchars('
					. $params[0] .', ENT_QUOTES, '
					. var_export($char_set, true) . ', '
					. var_export($double_encode, true)
					. '), "HTML-ENTITIES", '
					. var_export($char_set, true) . ')';
				}

				// no MBString fallback
				return 'htmlentities('
				. $params[0] .', ENT_QUOTES, '
				. var_export($char_set, true) . ', '
				. var_export($double_encode, true) . ')';

			case 'url':
				return 'rawurlencode(' . $params[0] . ')';

			case 'urlpathinfo':
				return 'str_replace("%2F", "/", rawurlencode(' . $params[0] . '))';

			case 'quotes':
				// escape unescaped single quotes
				return 'preg_replace("%(?<!\\\\\\\\)\'%", "\\\'",' . $params[0] . ')';

			case 'javascript':
				// escape quotes and backslashes, newlines, etc.
				return 'strtr(' . $params[0] . ', array("\\\\" => "\\\\\\\\", "\'" => "\\\\\'", "\"" => "\\\\\"", "\\r" => "\\\\r", "\\n" => "\\\n", "</" => "<\/" ))';

		}
	} catch(SmartyException $e) {
		// pass through to regular plugin fallback
	}

	// could not optimize |escape call, so fallback to regular plugin
	if ($compiler->tag_nocache | $compiler->nocache) {
		$compiler->template->required_plugins['nocache']['escape']['modifier']['file'] = SMARTY_PLUGINS_DIR .'modifier.escape.php';
		$compiler->template->required_plugins['nocache']['escape']['modifier']['function'] = 'smarty_modifier_escape';
	} else {
		$compiler->template->required_plugins['compiled']['escape']['modifier']['file'] = SMARTY_PLUGINS_DIR .'modifier.escape.php';
		$compiler->template->required_plugins['compiled']['escape']['modifier']['function'] = 'smarty_modifier_escape';
	}
	return 'smarty_modifier_escape(' . join( ', ', $params ) . ')';
}

?>